Level Measurement for Marine LNG Fuel C Tank Single Shell
Level monitoring using modern radar technology increases safety and efficiency on marine LNG fuel single shell C tank
Reduce Level Measurement Complexities On Marine LNG fuel Tanks
The use of LNG in the marine industry has been available for quite a few years and is known to be a popular and cleaner alternative to traditional marine fuel. However, it is quite complex to find a solution that suits the specific tank requirements on various LNG fuel tanks. One of the challenges in using LNG as fuel is storage. Type C tanks, which are designed to withstand cryogenic temperatures, are often considered a feasible option for LNG storage on marine vessels. Type C tanks, commonly 300-1000 m3, -162°C below 10 bar and less than 20 m in height are feasible to be used for LNG. Radar technology is ideal for this application since it has a vertical cold box with process connections on top of the tank. Solutions used for this applications must be IGF code compliant and approved by marine class societies.
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Product Solutions
To meet regulations regarding emissions, many vessels are transitioning to using liquid natural gas (LNG) or liquified petroleum gas (LPG) as their primary fuel source due to their low sulfur emissions. However, this shift presents challenges in finding a marine supplier that offers a complete solution for level, pressure, and temperature measurement devices capable of operating under extreme conditions. This complete multi-instrument single flange solution can be configured to meet the needs of a future fuel tank application, ensuring safe and compliant operations.
- All instrumentation on the same flange makes it is easier for the design engineer to create the tank design
- Same configuration tool makes it fast and easy to configurate all instruments
- Same supplier for all instrumentation and the flange reduces supplier complexity
Materials of Construction
316L
Max. Operating Pressure
10 bar
Process Connection
JIS350 10K
Your profitability and reputation as an LNG operator demands buyer-seller agreement accuracy. The Rosemount TGU 53 Tank Radar Gauge is built for the task. The radar transmission is guided through a full length still pipe measuring the surface of the product and the patented array attenuator ensures accurate readings from the very bottom of the tank. Using the accurate and reliable TGU 53 you can perform your cargo transfer with complete trust. With dual channel technology primary and secondary level measurements are enabled by two independent radars, yet in one housing and a single still pipe installation. Single tank penetration makes for affordable new and retrofit installation.
- 5th generation of proven, industry-leading marine radar performance
- Minimized footprint and efficient installation with all CTMS functions in a single housing
- Safe operating redundancy with dual radar channel technology
Reference Accuracy
± 3mm
Weight
33 kg
Enclosure Rating
IP66
The Rosemount™ 5408 Non-Contacting Radar Level Transmitter uses enhanced technology and Human Centered Design to deliver accurate, reliable measurements on both liquid and solid materials. Using two-wire FMCW technology the Rosemount 5408 deploys a continuous echo to maximize radar signal strength and produce a more robust and reliable measurement. Delivering ease-of-use at every touch point, the Rosemount 5408 uses an intuitive software interface to guide the operator through installation, commissioning, proof-testing and maintenance. Powerful onboard diagnostics suite proactively monitors transmitter health and alerts if there is an issue. Safety certified to IEC 61508 for SIL 2 applications, the Rosemount 5408:SIS reduces cost of risk, increases efficiency and protects people and the environment.
- Low 12V dc lift-off voltage
- Immune to intermittent power loss
- Unique PTFE seal design eliminates the need for o-rings
Accuracy
Standard: ± 0.08 in. (± 2 mm)
Ultra accuracy: ± 0.04in. (± 1mm)
Ultra accuracy: ± 0.04in. (± 1mm)
Measurement Range
492 ft (150m), 82 ft (25 m) for Rosemount 5408:SIS in Safety mode
Operating Pressure
-15 to 1450 psi (-1 to 100 bar)
The Rosemount 5300 Level Transmitter is ideal for challenging measurements on liquids, slurries, and solids, offering state of the art reliability and safety features in level and interface applications. Rosemount 5300 offers several advantages such as easy installation, no need for calibration, and is unaffected by process conditions. Also, it is SIL 2 certified making it your first choice for safety applications. It has a robust construction and features powerful built-in diagnostics allowing you to focus on the essential part - your plant.
- Direct Switch Technology gives increased sensitivity, high reliability, and long measurement ranges
- Signal Quality Metrics gives you the ability to work proactively with your level instrumentation
- Probe End Projection offers greater level measurement reliability
Accuracy
± 0.12 in. (3 mm)
Repeatability
± 0.04 in. (1 mm)
Measurement Range
Up to 164 ft (50 m)
